1 // Copyright 2009,2010 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // FreeBSD system calls.
6 // This file is compiled as ordinary Go code,
7 // but it is also input to mksyscall,
8 // which parses the //sys lines and generates system call stubs.
9 // Note that sometimes we use a lowercase //sys name and wrap
10 // it in our own nicer implementation, either here or in
11 // syscall_bsd.go or syscall_unix.go.
17 type SockaddrDatalink struct {
26 raw RawSockaddrDatalink
29 // Translate "kern.hostname" to []_C_int{0,1,2,3}.
30 func nametomib(name string) (mib []_C_int, err error) {
31 const siz = unsafe.Sizeof(mib[0])
33 // NOTE(rsc): It seems strange to set the buffer to have
34 // size CTL_MAXNAME+2 but use only CTL_MAXNAME
35 // as the size. I don't know why the +2 is here, but the
36 // kernel uses +2 for its own implementation of this function.
37 // I am scared that if we don't include the +2 here, the kernel
38 // will silently write 2 words farther than we specify
39 // and we'll get memory corruption.
40 var buf [CTL_MAXNAME + 2]_C_int
41 n := uintptr(CTL_MAXNAME) * siz
43 p := (*byte)(unsafe.Pointer(&buf[0]))
44 bytes, err := ByteSliceFromString(name)
49 // Magic sysctl: "setting" 0.3 to a string name
50 // lets you read back the array of integers form.
51 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
54 return buf[0 : n/siz], nil
57 func direntIno(buf []byte) (uint64, bool) {
58 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
61 func direntReclen(buf []byte) (uint64, bool) {
62 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
65 func direntNamlen(buf []byte) (uint64, bool) {
66 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
69 //sysnb pipe() (r int, w int, err error)
71 func Pipe(p []int) (err error) {
75 p[0], p[1], err = pipe()
79 func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
81 vallen := _Socklen(SizeofIPMreqn)
82 errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
86 func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
87 return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
90 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
91 var rsa RawSockaddrAny
92 var len _Socklen = SizeofSockaddrAny
93 nfd, err = accept4(fd, &rsa, &len, flags)
97 if len > SizeofSockaddrAny {
98 panic("RawSockaddrAny too small")
100 sa, err = anyToSockaddr(&rsa)
108 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
109 var _p0 unsafe.Pointer
112 _p0 = unsafe.Pointer(&buf[0])
113 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
115 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
123 // Derive extattr namespace and attribute name
125 func xattrnamespace(fullattr string) (ns int, attr string, err error) {
127 for idx, val := range fullattr {
135 return -1, "", ENOATTR
138 namespace := fullattr[0:s]
139 attr = fullattr[s+1:]
143 return EXTATTR_NAMESPACE_USER, attr, nil
145 return EXTATTR_NAMESPACE_SYSTEM, attr, nil
147 return -1, "", ENOATTR
151 func initxattrdest(dest []byte, idx int) (d unsafe.Pointer) {
153 return unsafe.Pointer(&dest[idx])
155 return unsafe.Pointer(_zero)
159 // FreeBSD implements its own syscalls to handle extended attributes
161 func Getxattr(file string, attr string, dest []byte) (sz int, err error) {
162 d := initxattrdest(dest, 0)
163 destsize := len(dest)
165 nsid, a, err := xattrnamespace(attr)
170 return ExtattrGetFile(file, nsid, a, uintptr(d), destsize)
173 func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) {
174 d := initxattrdest(dest, 0)
175 destsize := len(dest)
177 nsid, a, err := xattrnamespace(attr)
182 return ExtattrGetFd(fd, nsid, a, uintptr(d), destsize)
185 func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) {
186 d := initxattrdest(dest, 0)
187 destsize := len(dest)
189 nsid, a, err := xattrnamespace(attr)
194 return ExtattrGetLink(link, nsid, a, uintptr(d), destsize)
197 // flags are unused on FreeBSD
199 func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) {
200 d := unsafe.Pointer(&data[0])
203 nsid, a, err := xattrnamespace(attr)
208 _, err = ExtattrSetFd(fd, nsid, a, uintptr(d), datasiz)
212 func Setxattr(file string, attr string, data []byte, flags int) (err error) {
213 d := unsafe.Pointer(&data[0])
216 nsid, a, err := xattrnamespace(attr)
221 _, err = ExtattrSetFile(file, nsid, a, uintptr(d), datasiz)
225 func Lsetxattr(link string, attr string, data []byte, flags int) (err error) {
226 d := unsafe.Pointer(&data[0])
229 nsid, a, err := xattrnamespace(attr)
234 _, err = ExtattrSetLink(link, nsid, a, uintptr(d), datasiz)
238 func Removexattr(file string, attr string) (err error) {
239 nsid, a, err := xattrnamespace(attr)
244 err = ExtattrDeleteFile(file, nsid, a)
248 func Fremovexattr(fd int, attr string) (err error) {
249 nsid, a, err := xattrnamespace(attr)
254 err = ExtattrDeleteFd(fd, nsid, a)
258 func Lremovexattr(link string, attr string) (err error) {
259 nsid, a, err := xattrnamespace(attr)
264 err = ExtattrDeleteLink(link, nsid, a)
268 func Listxattr(file string, dest []byte) (sz int, err error) {
269 d := initxattrdest(dest, 0)
272 // FreeBSD won't allow you to list xattrs from multiple namespaces
275 for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
276 stmp, e := ExtattrListFile(file, nsid, uintptr(d), destsiz)
278 /* Errors accessing system attrs are ignored so that
279 * we can implement the Linux-like behavior of omitting errors that
280 * we don't have read permissions on
282 * Linux will still error if we ask for user attributes on a file that
283 * we don't have read permissions on, so don't ignore those errors
285 if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
297 d = initxattrdest(dest, s)
303 func Flistxattr(fd int, dest []byte) (sz int, err error) {
304 d := initxattrdest(dest, 0)
309 for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
310 stmp, e := ExtattrListFd(fd, nsid, uintptr(d), destsiz)
311 if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
323 d = initxattrdest(dest, s)
329 func Llistxattr(link string, dest []byte) (sz int, err error) {
330 d := initxattrdest(dest, 0)
335 for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
336 stmp, e := ExtattrListLink(link, nsid, uintptr(d), destsiz)
337 if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
349 d = initxattrdest(dest, s)
355 //sys ioctl(fd int, req uint, arg uintptr) (err error)
357 // ioctl itself should not be exposed directly, but additional get/set
358 // functions for specific types are permissible.
360 // IoctlSetInt performs an ioctl operation which sets an integer value
361 // on fd, using the specified request number.
362 func IoctlSetInt(fd int, req uint, value int) error {
363 return ioctl(fd, req, uintptr(value))
366 func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
367 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
370 func IoctlSetTermios(fd int, req uint, value *Termios) error {
371 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
374 // IoctlGetInt performs an ioctl operation which gets an integer value
375 // from fd, using the specified request number.
376 func IoctlGetInt(fd int, req uint) (int, error) {
378 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
382 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
384 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
388 func IoctlGetTermios(fd int, req uint) (*Termios, error) {
390 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
397 //sys Access(path string, mode uint32) (err error)
398 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
399 //sys CapEnter() (err error)
400 //sys capRightsGet(version int, fd int, rightsp *CapRights) (err error) = SYS___CAP_RIGHTS_GET
401 //sys capRightsLimit(fd int, rightsp *CapRights) (err error)
402 //sys Chdir(path string) (err error)
403 //sys Chflags(path string, flags int) (err error)
404 //sys Chmod(path string, mode uint32) (err error)
405 //sys Chown(path string, uid int, gid int) (err error)
406 //sys Chroot(path string) (err error)
407 //sys Close(fd int) (err error)
408 //sys Dup(fd int) (nfd int, err error)
409 //sys Dup2(from int, to int) (err error)
411 //sys ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
412 //sys ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
413 //sys ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
414 //sys ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
415 //sys ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
416 //sys ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
417 //sys ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
418 //sys ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
419 //sys ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
420 //sys ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
421 //sys ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
422 //sys ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
423 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
424 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
425 //sys Fchdir(fd int) (err error)
426 //sys Fchflags(fd int, flags int) (err error)
427 //sys Fchmod(fd int, mode uint32) (err error)
428 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
429 //sys Fchown(fd int, uid int, gid int) (err error)
430 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
431 //sys Flock(fd int, how int) (err error)
432 //sys Fpathconf(fd int, name int) (val int, err error)
433 //sys Fstat(fd int, stat *Stat_t) (err error)
434 //sys Fstatfs(fd int, stat *Statfs_t) (err error)
435 //sys Fsync(fd int) (err error)
436 //sys Ftruncate(fd int, length int64) (err error)
437 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
438 //sys Getdtablesize() (size int)
439 //sysnb Getegid() (egid int)
440 //sysnb Geteuid() (uid int)
441 //sysnb Getgid() (gid int)
442 //sysnb Getpgid(pid int) (pgid int, err error)
443 //sysnb Getpgrp() (pgrp int)
444 //sysnb Getpid() (pid int)
445 //sysnb Getppid() (ppid int)
446 //sys Getpriority(which int, who int) (prio int, err error)
447 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
448 //sysnb Getrusage(who int, rusage *Rusage) (err error)
449 //sysnb Getsid(pid int) (sid int, err error)
450 //sysnb Gettimeofday(tv *Timeval) (err error)
451 //sysnb Getuid() (uid int)
452 //sys Issetugid() (tainted bool)
453 //sys Kill(pid int, signum syscall.Signal) (err error)
454 //sys Kqueue() (fd int, err error)
455 //sys Lchown(path string, uid int, gid int) (err error)
456 //sys Link(path string, link string) (err error)
457 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
458 //sys Listen(s int, backlog int) (err error)
459 //sys Lstat(path string, stat *Stat_t) (err error)
460 //sys Mkdir(path string, mode uint32) (err error)
461 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
462 //sys Mkfifo(path string, mode uint32) (err error)
463 //sys Mknod(path string, mode uint32, dev int) (err error)
464 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
465 //sys Open(path string, mode int, perm uint32) (fd int, err error)
466 //sys Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
467 //sys Pathconf(path string, name int) (val int, err error)
468 //sys Pread(fd int, p []byte, offset int64) (n int, err error)
469 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
470 //sys read(fd int, p []byte) (n int, err error)
471 //sys Readlink(path string, buf []byte) (n int, err error)
472 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
473 //sys Rename(from string, to string) (err error)
474 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
475 //sys Revoke(path string) (err error)
476 //sys Rmdir(path string) (err error)
477 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
478 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
479 //sysnb Setegid(egid int) (err error)
480 //sysnb Seteuid(euid int) (err error)
481 //sysnb Setgid(gid int) (err error)
482 //sys Setlogin(name string) (err error)
483 //sysnb Setpgid(pid int, pgid int) (err error)
484 //sys Setpriority(which int, who int, prio int) (err error)
485 //sysnb Setregid(rgid int, egid int) (err error)
486 //sysnb Setreuid(ruid int, euid int) (err error)
487 //sysnb Setresgid(rgid int, egid int, sgid int) (err error)
488 //sysnb Setresuid(ruid int, euid int, suid int) (err error)
489 //sysnb Setrlimit(which int, lim *Rlimit) (err error)
490 //sysnb Setsid() (pid int, err error)
491 //sysnb Settimeofday(tp *Timeval) (err error)
492 //sysnb Setuid(uid int) (err error)
493 //sys Stat(path string, stat *Stat_t) (err error)
494 //sys Statfs(path string, stat *Statfs_t) (err error)
495 //sys Symlink(path string, link string) (err error)
496 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
497 //sys Sync() (err error)
498 //sys Truncate(path string, length int64) (err error)
499 //sys Umask(newmask int) (oldmask int)
500 //sys Undelete(path string) (err error)
501 //sys Unlink(path string) (err error)
502 //sys Unlinkat(dirfd int, path string, flags int) (err error)
503 //sys Unmount(path string, flags int) (err error)
504 //sys write(fd int, p []byte) (n int, err error)
505 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
506 //sys munmap(addr uintptr, length uintptr) (err error)
507 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
508 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
509 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
510 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
545 // Kqueue_from_portset_np
613 // Shared_region_check_np
614 // Shared_region_map_np
615 // __pthread_mutex_destroy
616 // __pthread_mutex_init
617 // __pthread_mutex_lock
618 // __pthread_mutex_trylock
619 // __pthread_mutex_unlock
620 // __pthread_cond_init
621 // __pthread_cond_destroy
622 // __pthread_cond_broadcast
623 // __pthread_cond_signal
625 // __pthread_cond_timedwait
634 // __pthread_cond_wait
639 // __disable_threadsignal
640 // __pthread_markcancel
641 // __pthread_canceled
659 // Bsdthread_terminate
661 // Bsdthread_register
692 // Sigsuspend_nocancel
703 // Aio_suspend_nocancel
704 // __sigwait_nocancel
705 // __semwait_signal_nocancel